Declare the Stack

Replace hand-typed docker run commands with a compose file.

A advanced Docker challenge worth 20 points. Solve it hands-on in a real Docker environment in your browser - no local setup, no fake shells.

The Challenge

Scenario: Every deploy, someone forgets a flag in the hand-typed docker run commands for web + cache. Codify the stack.

The requirements are in /root/stack/README.md:

Tasks: write docker-compose.yml in /root/stack with:

• service web: image nginx:alpine, port 8088:80, ./html mounted read-only at /usr/share/nginx/html, restart unless-stopped
• service cache: image redis:7-alpine, named volume cache-data at /data
• Bring it up: docker compose up -d — browser panel on port 8088 shows Compose Stack Online

Commands to learn: compose file syntax, docker compose up/ps/logs

Run check when done.